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102 lines
1.6 KiB
102 lines
1.6 KiB
/*
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Language: Prolog
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Description: Prolog is a general purpose logic programming language associated with artificial intelligence and computational linguistics.
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Author: Raivo Laanemets <raivo@infdot.com>
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Website: https://en.wikipedia.org/wiki/Prolog
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*/
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function prolog(hljs) {
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const ATOM = {
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begin: /[a-z][A-Za-z0-9_]*/,
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relevance: 0
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};
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const VAR = {
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className: 'symbol',
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variants: [
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{
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begin: /[A-Z][a-zA-Z0-9_]*/
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},
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{
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begin: /_[A-Za-z0-9_]*/
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}
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],
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relevance: 0
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};
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const PARENTED = {
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begin: /\(/,
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end: /\)/,
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relevance: 0
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};
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const LIST = {
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begin: /\[/,
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end: /\]/
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};
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const LINE_COMMENT = {
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className: 'comment',
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begin: /%/,
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end: /$/,
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contains: [ hljs.PHRASAL_WORDS_MODE ]
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};
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const BACKTICK_STRING = {
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className: 'string',
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begin: /`/,
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end: /`/,
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contains: [ hljs.BACKSLASH_ESCAPE ]
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};
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const CHAR_CODE = {
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className: 'string', // 0'a etc.
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begin: /0'(\\'|.)/
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};
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const SPACE_CODE = {
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className: 'string',
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begin: /0'\\s/ // 0'\s
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};
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const PRED_OP = { // relevance booster
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begin: /:-/
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};
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const inner = [
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ATOM,
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VAR,
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PARENTED,
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PRED_OP,
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LIST,
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LINE_COMMENT,
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hljs.C_BLOCK_COMMENT_MODE,
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hljs.QUOTE_STRING_MODE,
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hljs.APOS_STRING_MODE,
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BACKTICK_STRING,
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CHAR_CODE,
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SPACE_CODE,
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hljs.C_NUMBER_MODE
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];
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PARENTED.contains = inner;
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LIST.contains = inner;
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return {
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name: 'Prolog',
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contains: inner.concat([
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{ // relevance booster
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begin: /\.$/
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}
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])
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};
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}
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module.exports = prolog;
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